The attack of Dr.Evil

First ludum game! Didn't use any game engine. Canvas solely. JS.

Hope you enjoy it!

OBJECTIVE: Don't let the power reach 0. How???
- MATERIALS: boulders and bombs to the purple tunnel; all the other materials to the green tunnel. You pick items by intersecting them.
- MOVING: you can move with A and D;
- SHOOTING: you can shoot with J. You can destroy all the materials and you can also destroy the number boxes. If you hit the correct number box for the operation on the top you get your speed increased. If you hit the wrong one you get your speed decreased.
- POWER: You lose power over time, when you bring materials to the wrong tunnels and when boulders or bombs exit the screen. You receive power when you bring materials to the correct tunnels.

Hang on as long as possible!